Since our bodies are made up of 70 percent water, we need water to keep us from dehydrating, food is important because it has the nutrients and proteins that our bodies need to repair, grow, and keep healthy, and oxygen is also important because it gets carried throughout our blood stream and oxygenates our muscles, without any of these, we would die within a few weeks
Answer:
For conduction
A.
air molecules touch the warm ground, heating them up because conduction is the transfer of energy through direct contact
For convection
B.
Warm air rises and takes heat with it; eventually it cools and sinks.
Explanation:
Day is simply when a part of the world is getting direct sunlight and night is when the sun is not facing that part of the world and relies on the reflection of the sun on to the moon to get sunlight.
Earthworms amnion.........................................................
starfish bony skeleton.......................................................
Groups of atoms held together by energy are called a molecule. The energy or force holding the atoms together is called a Chemical Bond,
The Covalent bond involves the sharing of 2 electrons.
Molecule- One or more atoms make up molecules. They may have the same atoms or different atoms if they have more than one. Biological molecules like DNA and proteins can include thousands of atoms.
Chemical Bond- Chemical bonding is the process through which two or more atoms, molecules, or ions establish a chemical link to create a chemical compound.
Electron- A negatively charged subatomic particle known as an electron can either be free or attached to an atom (not bound).
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